1313544544 has 48 divisors (see below), whose sum is σ = 2809713312. Its totient is φ = 600864768.

The previous prime is 1313544541. The next prime is 1313544571. The reversal of 1313544544 is 4454453131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313544541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33037 + ... + 60979.

It is an arithmetic number, because the mean of its divisors is an integer number (58535694).

Almost surely, 2^1313544544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1313544544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1404856656).

1313544544 is an abundant number, since it is smaller than the sum of its proper divisors (1496168768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1313544544 is a wasteful number, since it uses less digits than its factorization.

1313544544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28079 (or 28071 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 1313544544 is about 36242.8550751731. The cubic root of 1313544544 is about 1095.1701587765.

Adding to 1313544544 its reverse (4454453131), we get a palindrome (5767997675).

The spelling of 1313544544 in words is "one billion, three hundred thirteen million, five hundred forty-four thousand, five hundred forty-four".